[FFmpeg-devel] Re: [DISCUSSION] Adding ARM64EC support to FFmpeg

["Rémi Denis-Courmont via ffmpeg-devel" <ffmpeg-devel@ffmpeg.org>]

Le perjantaina 3. lokakuuta 2025, 23.49.46 Itä-Euroopan kesäaika Stephen 
Hutchinson via ffmpeg-devel a écrit :
> While I haven't gotten through adding the more newly-added external
> libraries to the tedious mingw build guide, IIRC most/all of them
> already can be built natively for AArch64, so I can't really think of a
> publicly-available set of circumstances where someone would be linking
> an x86-64 dependency into a native Arm instance of FFmpeg.
> 
> I could see it as trying to use x86-64 builds of AviSynth+, though.
> That's LoadLibrary, and I either can't remember or haven't seen
> anything that describes how the Arm64EC concept behaves when using
> dynamic loading.
> 
> Yes, there is a native AArch64 Windows release of AviSynth+,
> but there won't be one for Arm64EC, because we dropped support
> for building with MSVC outside of x86(-64).  An llvm-mingw-built
> Arm64EC core wouldn't be able to load MSVC-built x86-64 plugins.
> 
> So it wouldn't surprise me if people stubbornly refuse to use
> the AArch64 release because they don't want to let go of a build
> of a plugin that the plugin author only published for x86-64
> (even if said plugin is FOSS).

Ok, fair enough. Though on second thought, I think that the problem of how to 
build that is far worse than the problem of register allocations in assembler.

-- 
ヅニ-クーモン・レミ
Tapio's place new town, former Finnish Republic of Uusimaa



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